Impact of the disk magnetization on MHD disk wind signature

Abstract

Observation of blue-shifted X-ray absorption lines indicates the presence of wind from the accretion disk in X-ray binaries. Magnetohydrodynamic (MHD) driving is one of the possible wind launching mechanisms. Recent theoretical development makes magnetic accretion-ejection self-similar solutions much more generalized, and wind can be launched even at much lower magnetization compared to equipartition value, which was the only possibility beforehand. Here, we model the transmitted spectra through MHD driven photoionized wind - models which have different values of magnetizations. We investigate the possibility of detecting absorption lines by the upcoming instruments XRISM and Athena. Attempts are made to find the robustness of the method of fitting asymmetric line profiles by multiple Gaussians. We use photoionization code XSTAR to simulate the transmitted model spectra. Fake observed spectra are finally produced by convolving model spectra with instruments' responses. Since the line asymmetries are apparent in the convolved spectra as well, this can be used as an observable diagnostic to fit for, in future XRISM and Athena spectra. We demonstrate some amount of rigor in assessing the equivalent widths of the major absorption lines, including the Fe XXVI Ly$\alpha$ doublets which can be clearly distinguished in the superior quality, future high resolution spectra. Disk magnetization becomes another crucial MHD variable that can significantly alter the absorption line profiles. Low magnetization pure MHD outflow models are dense enough to be observed by the existing or upcoming instruments. Thus these models become simpler alternatives to MHD-thermal models. Fitting with multiple Gaussians is a promising method to handle asymmetric line profiles, as well as the Fe XXVI Ly$\alpha$ doublets.

arXiv comment17 pages (including 4 pages of Appendix), 13 figures, Accepted for publication in A&A

References in corpus (55)

• X-ray Properties of Black-Hole Binaries
• Modelling the behaviour of accretion flows in X-ray binaries
• Optimal binning of X-ray spectra and response matrix design
• Ubiquitous equatorial accretion disc winds in black hole soft states
• The magnetic nature of disk accretion onto black holes
• On Why Disks Generate Magnetic Towers and Collimate Jets
• The Accretion Disk Wind in the Black Hole GRO J1655-40
• High resolution Chandra HETG and RXTE observations of GRS 1915+105 : A hot disk atmosphere & cold gas enriched in Iron and Silicon
• The Chandra HETGS and RXTE view of GRS 1915+105
• MHD Accretion-Disk Winds as X-ray Absorbers in AGNs
• Simultaneous Chandra and RXTE Spectroscopy of the Microquasar H~1743-322: Clues to Disk Wind and Jet Formation from a Variable Ionized Outflow
• Chandra/HETGS Spectroscopy of the Galactic Black Hole GX 339-4: A Relativistic Iron Line and Evidence for a Seyfert-like Warm Absorber
• A unified accretion-ejection paradigm for Black Hole X-ray Binaries
• The Physics of the 'Heartbeat' State of GRS 1915+105
• Accretion disc dynamo activity in local simulations spanning weak-to-strong net vertical magnetic flux regimes
• On the role of the UV and X-ray radiation in driving a disk wind in X-ray binaries
• Accretion disc atmospheres and winds in low-mass X-ray binaries
• GRS 1915+105 in "Soft State": Nature of Accretion Disk Wind and Origin of X-Ray Emission
• Multi-Temperature Blackbody Spectra of Thin Accretion Disks With and Without a Zero-Torque Inner Boundary Condition
• An Extreme X-ray Disk Wind in the Black Hole Candidate IGR J17091-3624
• The magnetorotational instability as a jet launching mechanism
• Spectrum Synthesis Modeling of the X-ray Spectrum of GRO J1655-40 Taken During the 2005 Outburst
• Absorption Measure Distribution of the Outflow in IRAS 13349+2438: Direct Observation of Thermal Instability?
• A Hybrid Magnetically/Thermally-Driven Wind in the Black Hole GRO J1655-40?
• Density Profiles in Seyfert Outflows
• Hard-state accretion disk winds from black holes: the revealing case of MAXI J1820+070
• Stationary accretion disks launching super fast-magnetosonic MHD jets
• Regulation of Black Hole Winds and Jets Across the Mass Scale
• The Accretion Disk Wind in the Black Hole GRS 1915+105
• The role of the disk magnetization on the hysteresis behavior of X-ray binaries
• Suzaku Observation of GRS 1915+105: Evolution of Accretion Disc Structure during Limit-Cycle Oscillation
• Absorption lines from magnetically-driven winds in X-ray binaries
• A unified accretion-ejection paradigm for black hole X-ray binaries. III. Spectral signatures of hybrid disk configurations
• Magnetically-driven jets and winds from weakly magnetized accretion disks
• A unified accretion-ejection paradigm for black hole X-ray binaries. IV. Replication of the 2010--2011 activity cycle of GX 339-4
• High ionisation absorption in low mass X-ray binaries
• Thermal Disk Winds in X-ray Binaries: Realistic Heating and Cooling Rates Give Rise to Slow, but Massive Outflows
• The effects of thermodynamic stability on wind properties in different low mass black hole binary states
• On the importance of special relativistic effects in modelling ultra-fast outflows
• An equatorial outflow in the black hole optical dipper Swift J1357.2-0933
• Hard-state optical wind during the discovery outburst of the black-hole X-ray dipper MAXI J1803-298
• Optical and near-infrared spectroscopy of the black hole GX 339-4 II. The spectrocopic content in the low/hard and high/soft states
• Photoionization instability of the Fe K absorbing plasma in the neutron star transient AX J1745.6-2901
• A Comprehensive Chandra Study of the Disk Wind in the Black Hole Candidate 4U 1630-472
• Thermally-Driven Disc Winds as a Mechanism for X-ray Irradiation Heating in Black Hole X-ray Binaries: The Case Study of GX339-4
• The thermal-radiative wind in low mass X-ray binary H 1743-322: II. iron line predictions from Monte Carlo radiation transfer
• Discovery of optical outflows and inflows in the black hole candidate GRS 1716-249
• Tell-Tale Spectral Signatures of MHD-driven Ultra-Fast Outflows in AGNs
• Modeling Magnetic Disk-Wind State Transitions in Black Hole X-ray Binaries
• Simultaneous X-ray and optical spectroscopy of V404 Cygni supports the multi-phase nature of X-ray binary accretion disc winds
• The current state of disk wind observations in BHLMXBs through X-ray absorption lines in the iron band
• Suzaku Observations of the Black Hole H1743-322 in Outburst
• Absorption lines from magnetically driven winds in X-ray binaries II: high resolution observational signatures expected from future X-ray observatories
• Numerical simulations of MHD jets from Keplerian accretion disks I-Recollimation shocks
• Hyper-massive Black Holes have Faint Broad and Narrow Emission Lines

Cited by in corpus (5)

• Stratified wind from a super-Eddington X-ray binary is slower than expected
• Influence of the turbulent magnetic pressure on isothermal jet emitting disks
• Accretion disc winds in X-ray binaries
• 20 years of disk winds in 4U 1630-47 -- I. Long-term behavior and influence of hard X-rays
• A high-resolution X-ray view of the ultra-fast outflow in MAXI J1810-222